<!DOCTYPE html>
<html lang="en">   
<head>
    <meta charset="UTF-8">
 
    <title>钢铁侠图集</title>
</head>
<body><p><h3>钢铁侠</h3></p>
    <img src ="th.jpg"
    alt = "I am iron man."
    width="300"
    height="600">
</body>
</html>